At the beginning of your upkeep, put a muster counter on Assemble the Legion. Then create a 1/1 red and white Soldier creature token with haste for each muster counter on Assemble the Legion.
{X}{R}
Balduvian Rage
Instant
Target attacking creature gets +X/+0 until end of turn.
Draw a card at the beginning of the next turn's upkeep.
{1}{W}
Battlefield Promotion
Instant
Put a +1/+1 counter on target creature. That creature gains first strike until end of turn. You gain 2 life.
{1}{R}
Blood Lust
Instant
If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.
{3}{R}
Bolt Bend
Instant
This spell costs {3} less to cast if you control a creature with power 4 or greater.
Change the target of target spell or ability with a single target.
{R}{W}
Boros Charm
Instant
Choose one --
• Boros Charm deals 4 damage to target player or planeswalker.
• Permanents you control gain indestructible until end of turn.
• Target creature gains double strike until end of turn.
{R}
Borrowed Hostility
Instant
Escalate {3} (Pay this cost for each mode chosen beyond the first.)
Choose one or both --
• Target creature gets +3/+0 until end of turn.
• Target creature gains first strike until end of turn.
{1}{R}
Brute Strength
Instant
Target creature gets +3/+1 and gains trample until end of turn.
{1}{R}
Burning Prophet
Creature - Human Wizard
Whenever you cast a noncreature spell, Burning Prophet gets +1/+0 until end of turn, then scry 1.
1 /
3
{3}{R}{R}
Chandra's Ignition
Sorcery
Target creature you control deals damage equal to its power to each other creature and each opponent.
{2}{R}
Chaos Warp
Instant
The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.
{2}
Coldsteel Heart
Snow Artifact
Coldsteel Heart enters the battlefield tapped.
As Coldsteel Heart enters the battlefield, choose a color.
{T}: Add one mana of the chosen color.
{2}{W}
Danitha Capashen, Paragon
Legendary Creature - Human Knight
First strike, vigilance, lifelink
Aura and Equipment spells you cast cost {1} less to cast.
2 /
2
{1}{W}
Darksteel Mutation
Enchantment - Aura
Enchant creature
Enchanted creature is an Insect artifact creature with base power and toughness 0/1 and has indestructible, and it loses all other abilities, card types, and creature types.
{W}
Defiant Strike
Instant
Target creature gets +1/+0 until end of turn.
Draw a card.
{1}{R/W}
Double Cleave
Instant
Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)
{1}{W}{W}
Empyrial Armor
Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 for each card in your hand.
{W}
Erase
Instant
Exile target enchantment.
--
Evolving Wilds
Land
{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{R}
Expedite
Instant
Target creature gains haste until end of turn.
Draw a card.
{R}
Faithless Looting
Sorcery
Draw two cards, then discard two cards.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{1}{R}
Fall of the Hammer
Instant
Target creature you control deals damage equal to its power to another target creature.
{R}{W}{W}
Feather, the Redeemed
Legendary Creature - Angel
Flying
Whenever you cast an instant or sorcery spell that targets a creature you control, exile that card instead of putting it into your graveyard as it resolves. If you do, return it to your hand at the beginning of the next end step.
3 /
4
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
{4}
Firemind Vessel
Artifact
Firemind Vessel enters tapped.
{T}: Add two mana of different colors.
{2}{W}
Forsake the Worldly
Instant
Exile target artifact or enchantment.
Cycling {2} ({2}, Discard this card: Draw a card.)
{W}
Gird for Battle
Sorcery
Put a +1/+1 counter on each of up to two target creatures.
{1}{W}
Guided Strike
Instant
Target creature gets +1/+0 and gains first strike until end of turn.
Draw a card.
{2}{R}
Guttersnipe
Creature - Goblin Shaman
Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.
2 /
2
{W}
Heal
Instant
Prevent the next 1 damage that would be dealt to any target this turn.
Draw a card at the beginning of the next turn's upkeep.
{2}
Inquisitor's Flail
Artifact - Equipment
If equipped creature would deal combat damage, it deals double that damage instead.
If another creature would deal combat damage to equipped creature, it deals double that damage to equipped creature instead.
Equip {2}
{2}
Key to the City
Artifact
{T}, Discard a card: Up to one target creature can't be blocked this turn.
Whenever Key to the City becomes untapped, you may pay {2}. If you do, draw a card.
{5}{R}{R}
Knollspine Dragon
Creature - Dragon
Flying
When Knollspine Dragon enters the battlefield, you may discard your hand and draw cards equal to the damage dealt to target opponent this turn.
7 /
5
{R}
Magnetic Theft
Instant
Attach target Equipment to target creature. (Control of the Equipment doesn't change.)
{2}{W}{W}
Magus of the Moat
Creature - Human Wizard
Creatures without flying can't attack.
0 /
3
{2}{R}
Mana Flare
Enchantment
Whenever a player taps a land for mana, that player adds one mana of any type that land produced.
{3}
Mana Geode
Artifact
When Mana Geode enters the battlefield, scry 1.
{T}: Add one mana of any color.
{3}{R}{R}
Mana Geyser
Sorcery
Add {R} for each tapped land your opponents control.
{2}
Mask of Memory
Artifact - Equipment
Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
{2}
Mind Stone
Artifact
{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.
{W}
Moment of Triumph
Instant
Target creature gets +2/+2 until end of turn. You gain 2 life.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{1}{R}
Nahiri's Stoneblades
Instant
Up to two target creatures each get +2/+0 until end of turn.
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
--
Plains
Basic Land - Plains
({T}: Add {W}.)
{1}{R}
Price of Progress
Instant
Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.
{4}
Primal Amulet
Artifact
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.
--
Primal Wellspring
Land
(Transforms from Primal Amulet.)
{T}: Add one mana of any color. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.
{R}
Pyroblast
Instant
Choose one --
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.
{1}{W}
Razor Barrier
Instant
Target permanent you control gains protection from artifacts or from the color of your choice until end of turn.
{R}
Reckless Rage
Instant
Reckless Rage deals 4 damage to target creature you don't control and 2 damage to target creature you control.
{2}{R}{R}
Rekindling Phoenix
Creature - Phoenix
Flying
When Rekindling Phoenix dies, create a 0/1 red Elemental creature token with "At the beginning of your upkeep, sacrifice this creature and return target card named Rekindling Phoenix from your graveyard to the battlefield. It gains haste until end of turn."
4 /
3
--
Reliquary Tower
Land
You have no maximum hand size.
{T}: Add {C}.
{R}
Rile
Sorcery
Rile deals 1 damage to target creature you control. That creature gains trample until end of turn.
Draw a card.
{R}
Samut's Sprint
Instant
Target creature gets +2/+1 and gains haste until end of turn. Scry 1.
{W}
Sheltering Light
Instant
Target creature gains indestructible until end of turn. Scry 1. (Damage and effects that say "destroy" don't destroy the creature.)
{4}
Sisay's Ring
Artifact
{T}: Add {C}{C}.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}{R}
Spellgorger Weird
Creature - Weird
Whenever you cast a noncreature spell, put a +1/+1 counter on Spellgorger Weird.
2 /
2
{W}
Stave Off
Instant
Target creature gains protection from the color of your choice until end of turn.
--
Stone Quarry
Land
Stone Quarry enters the battlefield tapped.
{T}: Add {R} or {W}.
{1}{R}
Sure Strike
Instant
Target creature gets +3/+0 and gains first strike until end of turn.
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{2}
Sword of the Animist
Legendary Artifact - Equipment
Equipped creature gets +1/+1.
Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Equip {2}
{W}
Swords to Plowshares
Instant
Exile target creature. Its controller gains life equal to its power.
{2}{R}
Taurean Mauler
Creature - Shapeshifter
Changeling (This card is every creature type.)
Whenever an opponent casts a spell, you may put a +1/+1 counter on Taurean Mauler.
2 /
2
{1}{R}
Temur Battle Rage
Instant
Target creature gains double strike until end of turn.
Ferocious -- That creature also gains trample until end of turn if you control a creature with power 4 or greater.
{R}{W}
Tenth District Legionnaire
Creature - Human Soldier
Haste
Whenever you cast a spell that targets Tenth District Legionnaire, put a +1/+1 counter on Tenth District Legionnaire, then scry 1.
2 /
2
{R}
Titan's Strength
Instant
Target creature gets +3/+1 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
{1}{R}
Tormenting Voice
Sorcery
As an additional cost to cast this spell, discard a card.
Draw two cards.
{3}
Trepanation Blade
Artifact - Equipment
Whenever equipped creature attacks, defending player reveals cards from the top of their library until they reveal a land card. The creature gets +1/+0 until end of turn for each card revealed this way. That player puts the revealed cards into their graveyard.
Equip {2}
{R}
Vandalblast
Sorcery
Destroy target artifact you don't control.
Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")
--
Wind-Scarred Crag
Land
Wind-Scarred Crag enters the battlefield tapped.
When Wind-Scarred Crag enters the battlefield, you gain 1 life.